Question on turbine size for this plane.
The description on BananaHobby states : "Engine is ready for your 80kg to 140kg turbine"
I have a JetCentral Cheetah SP (140 size) available. I fly from a grass field, about 200m long.
Is it practical to put a 140 in this plane? Most people seem to be at the lower range of turbine size.
Also, on the Boomerang RC site, the turbine size range is listed as "Recommended turbine size 6kg - 10kg. "
Well, 1 kg force equals 9.81 Newtons, so Banana Hobby is saying you want an engine that produces between 784 N to 1373 N. A Cheetah Se is a 160-class engine meaning 160 Newtons of thrust. So at a minimum, Banana Hobby has the units all off. Now in the detailed information they say " 8~12kg (17.6~26.5 lb) turbine engine (not included) " which is closer.
The airplane has a 68" wingspan and is listed to weigh 21 lbs with turbine and fuel. At 21 lbs, an 80 will push it very well. A 140 (or 160) would rip the wings off! I'd trust Larry at Boomerang when he says a 6kg (60 size) to 10kg (100 size) turbine. I watched him fly it off of grass at the Tiger Meet in SC and it did fine. Ask him what size engine he had in his.
Bob